Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ec36163b4d71fe180d6242b53ed714a74660476ba6b655b67a402c16a74dc8a5' 
  AND token = 'FdfUMwd1XLPTeeVB5NWTEv/TyE4i/RIIBlPEqRl4L7s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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