Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c0d4cebf49eda63f5569a27b61241d6d8c4068e1777460ddfa83a64b1fc659e0' 
  AND token = 'BEeZHJCukrCxkRzEMVsWCl9lM3th9IZ2vRle8V72QdQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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