Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8532a72ddc0655ed6acde27a4878bcd4d9f095b2085f792621944abf1a146d5f' 
  AND token = 'SmjtiZD2mIBCm6dxvgjqMuLkFzjdW7y6N46uh5jX5bo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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