Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7bcf05cb43e132eb49748c761cd80ff862a8ddca6240c64c476728412a1e0f45' 
  AND token = 'NjdT03nEXR8Gkuarw+Z3g6d7+k0N1LpNLTBrv+64Q3M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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