Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93fa7b41c09cc55dff136a4ad2e5d56cfc18e09591b3a170bb15def5f5da18ac' 
  AND token = 'tFtj2vFwkkCODTqJBMcCYNpNXLgofyxvr+H2XPcTHv8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}