Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0ebfa00eeccab4d17b824a59b25005b0c22f9c8bb20c9a570e1a325d26d3d5af' 
  AND token = 'd6eQ/8iMi0GpfcyV92cNJmPtQJ/DT3zxsnfxpy3qzY0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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