Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1da501c036eebe594252a91b7bd09914ee36419a931dca1af1f4f9008c8d77e3' 
  AND token = 'Iipgpp+/VZy7BcanGXIHpvg1bY3p1Gi1Q5qLa7UjBjs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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