Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f9ffa07b662acef6490e1cc29463fe5ddd59cf859f01703114c51f1db6ff2261' 
  AND token = 'DgzVOwYcCYxDq0a7G4wM5Za3SERI0OONDejYKRQr2bY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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