Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ddad22c893a64fbfbe76bc409212ed35f131fbb20b571162bd7076bcd583aefd' 
  AND token = 'YYWeHPOuUjUWfz6l2fI4LQ3Hv4bb4cuetGZuqBd5g9I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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