Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3648df61598add4f3e917ffac491e049ad526c58588c6eac0b4db941a60830b1' 
  AND token = 'QsD7fGCrojOrQmOSMc+6oVNtA8oSeiy/TtPfut+5SnU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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