Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bafead33f472e67d0b07a8208c5e834be37f2f161c3cba8af35adb49656b992d' 
  AND token = '0lxdfqQ1Zqt0+zEWQ0Er7SoMDl+nFgPRBo4R+ANEA4U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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