Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '53843724b01dc90aeac5d4b842d9ac7e72e2ec3ec274b109da7f51ef2d8f951d' 
  AND token = 'DqM6hhKnGQOn4fHNUNFzfJldmYv4zTrrx6astFCSRlI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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