Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8a2275c6716ba0bd9525f003fee60ebccb3f74ff2ee4038a88cdb2808a272eec' 
  AND token = '9S67fTeJEdlWbibDwm1i4lvJwCH9MiNMYX+JV0pgAOI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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