Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32ec1d1ba10ff8716b63c7d66ffd4bf91b0319697e78a3a1efb52ace91f36af9' 
  AND token = 'rywGRIc9zLlHv71g0/I+uhIHlbscpwkToDlr/lKJzMg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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