Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c97774298e65e310e75aaaf75b7d74e877f703a84703a0ae9a75a443cddbbd4e' 
  AND token = 'haNHtAWQbBfREBjJKjT/sFgKgyx7W5NQcXMFFCYHj4Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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