Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63e9fcd7f15442c4494d07755fc53512a07848ba90acec7fee08fd73aad8d65c' 
  AND token = 'V5v2l6tDkgjrqTK33AVApJAO8vES6AcZJ0m06Uq9sjo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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