Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dacfc48e4cd0499e56337f192e2630c794d3126cabe5fce32583ed2f26cfe9ba' 
  AND token = '48c9i5u3Tl/zQujzKlHkrGs9A3KfnXfwBwaAi3jP0yY=' 
  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"
    }
  }
}