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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e0b56fb32b297a380f84677242c983d2bcc963d95fcf6c233bff6e06ce041ffd' 
  AND token = 'VW4q80kxoOfR/La4Ajxp6NfsJ7sbLemCiqjqX8mwTsA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}