Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bf00cc2e4451e0b18549db42ba47b7b7e505432544058ee61715e0f942e0f349' 
  AND token = '2I7lKlDQ+DDyTjfNxaSa9TaWJaaR6Was083f5sFAKUM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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