Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ad8d16267990c898845aba6db60006e69ae648fc4c772b5fa626c2b49747dca' 
  AND token = 'tHZuWbcUU8AsFvlin5p2X4uYLx+oNLoCQXqR59cTzUk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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