Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ea03d93ed4742244c04ebd9df997a15cae33a72ca53bc631cd5390fd6b9edbbb' 
  AND token = 'lvspBZMMsjYCKyeXBUtSIgkchFnraxHjKEsvld6ljnk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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