Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '67095e27748e6517dbb1f7d70070372e665aa7b53b9e7cbf145a52d8e85fcd6a' 
  AND token = 'gOKsDqyxIghQMl/OiWlted/jgyXiG9U/RNisLCVjeqA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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