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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65c8f48e73b70953c14a4d5c4fd99202692aa3fc02612877e230ed054640d125' 
  AND token = '7kkyasX67SYJTgX6KBE4k7Izv7h4O8jorlkA/a5Heh4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}