Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8746af8fea9fcba45db137c9e44476ff587724503705ea8a13d900bb800b2f09' 
  AND token = 'EYgsuBKpIyzxvtI/otNm2HyMRbPkHfmBm66Wn5AL5D4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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