Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '56752b715ce8f63dde8989d909f146a4663f972c98e1d9437923f9ff5853ebe3' 
  AND token = 'mTugvfbEuCTeSdn7FFE5/vDlRtvOBkSV3ZE13H4LPYM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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