Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '82ee9156e68b42d46c8a2d4d600b3568c0ee2519e29f9f894130d4b4775f5148' 
  AND token = 'Qgm88UA5AfrqPEOM4RMwHO2Z3wJ7m7+I3Mi/4QWuCf4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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