Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f9110a2295af6012f28544625a60395cd07ba590f0d6d626f46f760baa56ae34' 
  AND token = 'QA44baA7eg4y6bNLbGFLUaB7H3EZ9J7wq2WBDyfLkRU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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