Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '70fa0e975ca894752b3fa8c6e435126bf66a43b67ed15743e608193309caac42' 
  AND token = 'VddYIRGWNSyR4HhF8X4J1G7mB2Sb/LkJKG6G9DHLH9I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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