Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd13e03f19501472e1e1efab24fc2f269a98fd53e119402cf1391a06d48cab8b2' 
  AND token = 'xLbdBllT641xVPsZDF4WMmysrohdQAo/LsyLjpEm1OA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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