Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a2acb679870a6e545752b4c4c02272ce4626a727c31374b518c23d38f689c443' 
  AND token = 'x5Ynsxx2UjMqJzvIcUcs2vyqwE41YIB1zr2pNUHGS38=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00109

JSON explain

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