Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e6f5f4b4e99fe77cd71ef7ad9fa2f5fe8e434fe127f2df0f04db70f39ea7d856' 
  AND token = '4zTCE9FxFJBcYdWECUkfdW1ySnawN8fdQi/qF7NPKlw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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