Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3e937154298f00442a0be17a4b1900b0c46971cee215bcf62ca1ac2bd1870beb' 
  AND token = 'X/Hn57JeMMVb0rgVyWLJbOMZfTDdSmKV16/7ewI5D4Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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