Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8505f3a7c030eecf29091dcfef300ce7360cfa6846edc4c52e8df1a8d052efc3' 
  AND token = 'yU0CsHAQMsLIOeDCUuKxraY1HPD34nlN2H7HE08wSRQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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