Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5a39983754e1cb11262e722349077bb598dd282341ce5a3369269ad391129e69' 
  AND token = 'BxE/7YJyxUyp+oL8fJ/5i5drvWD2jLRzFTymQts5NgU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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