Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e58e94a8914150105915ca963f0163ea102ef021ae1308de37b1c97822baf326' 
  AND token = 's7LC0uKI4wX/Tkx538HphRNxzqdVqg0/o1ZRUcoWaw4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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