Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '165688e190090b2f5200ece74c4f0f0dad1a8feefb62b9aca378b74da422cba5' 
  AND token = '2N2WhmKhQWGAqlPt6y+8Ab5D/9Qt/Xz/c75jX9DcWY8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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