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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '38ea48f7d57268c5a2c8c262d09e9530c8ec54f442b8e52d1bd23ce8ef7022a1' 
  AND token = 'MglWnMc1erBvXw5W+oQeCKQnt65L+fs47TTYeVl3LXU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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