Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eba8652caf8e03c142efb013544d12a8f9f458687d0ffb2edf2408f6696a77f4' 
  AND token = 'sx6D7UiKdXCE9mILcqm80WZ518OPPgnZq4g5t17kyf4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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