Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3301c456a6c48aa385a811cffe4427c6a4c4419c8ee48dfdb7c8cb549cbdc8bb' 
  AND token = 'cjug3Cw0pBOnagdwDMD09fpGH2LuOx2JoxVMCZnR6z0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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