Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2b92fe49f41595e4ccc40d5965420a71114e6c00bcb720590b800a5acc527f14' 
  AND token = 'ERV26nJMyeB+4nAOwXs4PdBzoGJhOpRSFtqEWsPVnBU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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