Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22957279ce5e852c664c4733bf971d449fda79ce0ffc4a926cd318dc79fb911f' 
  AND token = 'xcUEqsypOuVcnkaWnTiWkmfkXJsIEF/O/It1lUrDJac=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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