Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed99d42be9345e12eb08a825ad633fa79dbc765e09df4277c189546710033e71' 
  AND token = 'DJmejZ/74q4uWpo8fpiXYoMm8eZ7kF17uFedbbZ+CoY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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