Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '58cd9b06bf7283f79cc47556f2db5c7440f5cddb55b34461bcbce923d238c948' 
  AND token = 'JoiNDCO1YSoJXSpBieM4Ze9nGklRsbsbUcWC+ELRXnM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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