Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0046acc325102a24f2563f50741ba029a640e4eea0354432c01b05d0fa36e27e' 
  AND token = 'DTXG3MNikfVhobFZPFlbEnAZNNKS2R50+IUphW1hn2A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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