Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f0c7f439293bfd602c1c5d417cc10930d66f5b6e78a8db3b06b61a80e79d8a1a' 
  AND token = '9uybcNSVIao+toR0DJxzIrLuhto1UlcY/4/kBtgi8RE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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