Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7caed4c2a561fea5a562f1a9fa163ba3f095d6224e911fb44950b9c6562878c8' 
  AND token = 'j/0+0f3Gk1c3Yk5OrwY316PEZ6XkznuRz2cAlCmcuew=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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