Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'baa55d9916aca3f240d10a1b92db31c33437ab5894087913fb54fb3ce9248677' 
  AND token = '/49SrlBXrLbQ2jfvgzKmkgFFHLFgrXbxRDM9f/ggLGo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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