Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0edce475cd1901aaa5ca72dcdd7a19acc268185127bcf8335e61874f1b4c9545' 
  AND token = 'Dt4qvVP7P7Zq5an08UC5vFafhKdXgLBvq/qH1Pc8bJw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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