Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'febad8699b0d7e73e3fa9fe796326d5130f6696ce03143c1ed8127be0b2ef5d5' 
  AND token = 'o8YenTk3SN7n1WEkluGz9Om+9WC9v6xm/DsHHkhEuek=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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