Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b17b1135d51df44241bfdd86db1408910f3c092534138786a84dc7e15e623c7e' 
  AND token = 'tCvpRTNcvmnMOOLMOen5fAdfQyxvQz8Q/i49r7ILlDE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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