Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd153df605f645db30974045d62bf1c5b5e41188b2231f15330fe6e0e8ffc7c95' 
  AND token = 'EURCqYGEJuvQ7Jff7hP3HYBi3tCwtXtfW94dtfUnh9k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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