Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd01ee9034e6f0be451022fb84ec5838de7ba353a78241375fe02f0835fba8d34' 
  AND token = 'r6vy+X5Y1IN+LpMSTcmCxbGFzl/+p8YFQNwUZsxy9SI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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