Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24b7cade9518c61ba9ecb2fbd586a0b988461f7406084d2a83945ea027a9564d' 
  AND token = 'sI3n+xNLbCBK1fxql19uFhASebhF+bHNuFIRSD9sKmg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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