Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ca046263ddba8e68323ec7237289cb4b2999067fd490bc853afd1e4ff846dcc0' 
  AND token = 'sNaAcu7BTimyKqGQp4ivBfwmAOYGOalaXrZM3mAQeTw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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