Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee415da918c9fd6b67c863c9f79710eaf9e70f6a5fbb30a5abf59d6086412301' 
  AND token = 'xcK0saYbfdLsh6f/yBpRA1YMlX6e/Ew68yZJ1kE9X60=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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