Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cf60e33b65421153854226827cc64aefb716de7fe9b42dad63c5edebb82322a8' 
  AND token = 'T1lr0GEjLenFO59rFuWw2/u2X8t5id3kuWFwTA87GJg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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