Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d9f25024508e9986894c03c9437c9e14fcd8551ec3d9f4fcc95deabe3b043ec' 
  AND token = '3++weYIdribwDOnusiegwbh8nNlcIk09xerdsPEE7p8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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