Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3085ec17471027eb7001a855d3114eb49571a8200dc97437441aaa456971edd5' 
  AND token = 'LC+WoElb236oqJKeR2Z7rp3hAmDjyD4M78fu0eDa7rE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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