Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '607436ba450a926fc9422d8be3ccf6dbc0ea8a16cc4f38662f26c57f259e8018' 
  AND token = 'PQhYS3wUtDwhR+cficzUE3P01iObbt41XzFyfy0HIpY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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