Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '860118114bb422aff9af42996516b7d1e05270c2c2e79760f60336a401387a2c' 
  AND token = 'ed2bOiWF0GIHQIXyQi/CKT7S80MsY++Z2PazdafndnI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}