Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7e3381f8de2651340275925a425543d2345419578bc0417621c44647da78df1d' 
  AND token = 'C+q6oAXSETDhFICeA5/Op+BpGairmbnMrMd2eHRavY4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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