Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a5b01cc46c7fca990690626d379b54d0b38bee469fe93f809228318392fb40aa' 
  AND token = '6OgWFvWe5BoryyAwjML7PPG6qGv1Xk6mBa/eZuru8W8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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