Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2497535b8e91d86c809172e497239a03a8f6a4448fe4f75f81c82b0b9556e124' 
  AND token = 'rZ3oCHEUQU94MsiLZA2V48DaTukluoSLJ+gPLWbMxHI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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