Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c7e954e2d9227bf4fe7ae8f6193f35659a4b8766eb190094470f8d089b4eea3a' 
  AND token = 'r4JJITvrqFgSCseK2V6u9GQTWclC9UgMsys/kc8YwNI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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