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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5445b7ca42c7e464f816b00f20b319a01cb9521a39d434eb9edbdb9d2f22441b' 
  AND token = 'qNH6Pu9u0CZkcNUgU0vUIeCITb3Ukn+fV5XfW5z6fDA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00120

JSON explain

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