Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c29ce191b7f287cee12d9126a241f9c2a9c0b32ea23221407e88ba6392f114d9' 
  AND token = 'dp89dmoZ46vxoDZqfbUzsufUb3OGchL/fiHe9xOUml8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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