Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c47f659abaaeb11095b8cb7ed66031589bf79363f375cdac1f082596106a5aa0' 
  AND token = '0r71XLPYYe0Qp3GmwAFcjIvWw3+brDFgu6cJboCy4Gc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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