Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8477d0e8998103116168de9414a86a4c1f3e48ce638a0023facd396846736f7f' 
  AND token = 'iCv8mJLWdmPbBlEbbi/FBUNP0Z5aA/reU/KxtFQnjaw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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