Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3719cb59a93bc6b189740ee30a3cee13d947afdb82913b7db8b709bf6aaee3df' 
  AND token = 'q1xKNtmf4/nX0bEvaFy0gJaCj6M1gc5J0+pdXXyCyIo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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