Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1c26d6eb08e31347194d5a16e201ba70e924510a8c8a373b3cbf3c130156045f' 
  AND token = 'StLUZyZ5ooFmQ7kdjErn7laHY6gkkBcmcZ5MM2lEFQk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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