Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0508fbd56351c0caa91239cf2fb6c0e0bb4fb2c4f74132efc73acfb4c7caccde' 
  AND token = 'ifouSi38OXPr/gfLKuOe2/KTM6ifNVEtiy7H71sK4S8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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