Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13e00f41fb6a7a978e7f0f55056ef58c3e6f04f317ad1dfe9cc2a9d28e6a29db' 
  AND token = 'F6NFAmBo+p3VjvWwgA26+iDIr3hWrzubF2yJ0QEpt+I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00067

JSON explain

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