Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '35bf96d7571a2099a51ae2456c94d484101b10cce451f4084a0d244721db2b42' 
  AND token = 'YM828m0VOM6zq+KDberxWigZg1BfSMco287L+l2Nn3Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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