Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e1aa7b105e5a0c39365b0bd40705f6c9d9eb54e5eb5799743082a41de07174ad' 
  AND token = 'HM8yBjp7jp4eYVc3mDLF2tkYuiDWnwpCKTbi66ctBjI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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