Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '86397aa6b78877b01b06eb4b27c448182534b87a727e56874c0b686162fd9893' 
  AND token = '8mw5c/JkXvqXKMvMNj0V8w6N1LR/fZsIhC8kmzdUnrQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00062

JSON explain

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