SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '59e9a46dd04979fa04a1d8139df249f20193872b8f1a8544798d3cb98f3b2066' 
  AND token = 'WRXMfl2RNVBtR4nl3CdvXYIhcjHWJIuF+PfNm4rE9gU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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