Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd4c07061dc46cd15bb2ed5e9f428e6f4717e507cc4802e32fa1cbf2307536e32' 
  AND token = 'D+FlFpS80ZSpgTJ09ARjTuSY8emrUfmmMT4NCO5Z/RM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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