Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f49d974c415933d9812ec2c3b70b4b96ecf31f14ba8fad4b2ef2cea2157924cf' 
  AND token = '3HOMEzpR6SFJ56Jl9hgGfic6wRwI/DbQKmar9zqoZrA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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