Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd2939d51b32d4bf848c9182649aa670cd49f03e08764cbca3c2806a45a575dde' 
  AND token = 'qze6LarKe8jkf/bR8T+EMHF0uwKytQ9/ntWBG93Oxcw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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