Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b7005846870d8311a822ab7f408c98d3499fa267b50d7cf340135e37d450fa86' 
  AND token = '5+qSO3+AMSlMX8xL5ux7FVG7gs6RVxgT2Gn33sIgTz4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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