Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c9aafdc4d6665430044797b8dfe52c62af6e201f8be4cd789a1e9ca0ea7197dc' 
  AND token = 'wut6Y4jSD8ijapGtTdL4rMUCa8gT0t19zmH6067jusg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00059

JSON explain

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