Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '67110f906981d48aa84bd904106419e7690a73f1abb265b629df19dde605eec1' 
  AND token = '3Fyh76I/ftDegkAbsXUrpDsQ/F0e33txp6s+pBQPFh4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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