Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd282ec8bedf20198954f125030d8af4ee6dee2965dcc57925af26b26a12627ed' 
  AND token = 'ueo0s9mjzZ+x97b4gOszCXJncDmPui/LroesAYhHRPs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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