Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '66142752fc4aa8d86caba047a38ff2e6e8165593e84213a2db2b2382364e2963' 
  AND token = 'gAkGcTH++J7P1Qeo53Zogtv9108raRJBskY4Zl+5ysg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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