Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '84b51b631f4e5703f8a5697aa632f61565980092ebcad1ddc9f5cf08061d5da9' 
  AND token = 'juH6E5jrxGVZHhjgfiRU10A1yT/nHzdY6Yaul+aS404=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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