Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a538559e22af410cccd6b56aa6582397d91f992a556087ab1f575539cd9b308b' 
  AND token = '4D+eqsjJskqmCTyDWIzQpkPPO1vEXJ4oXx3kJQTUo8w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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