Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'efe4fdf02fd3bc79a354b0baaaef188da947ed60785f6df010e039ec8c1e4e5f' 
  AND token = 'h4j6xixxqDtgnQpE00NwISc3Zi23WWmkeiCMHbCXJFY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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