Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1b68a9492ce57398e4caba61b0ad79eeda0009330332576d9bf7b897370045f1' 
  AND token = 'XntHMkJgGVImfi7qlBiUubyvzR/yvA/aeKIP2b2L7zM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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