Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '188062fff0b3207a3c6f9f61a080eb1940f49de0cf2fdb710262527f8e320609' 
  AND token = 'ooH6x5/8b1XvnhSW8GhIOx1o1CRFKVVEDJlKqsLZvbg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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