Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1b276b44cc0f35b3d866cf40c85cb14fcd728182e89688de9b8107eb277c66b8' 
  AND token = 'Iw/EXB3QJxh25mpnmnYWINotqNacfCkHnUXxCfPI0Hw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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