Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cef37841ed53b079f6d24866ffe87309a4443a3021cdb1a92057bc74f4863d60' 
  AND token = '1CNcF40DUrzUl/qghXPWbjs+mOacB/UurfSA3EVsDLc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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