SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba0c0dd17616e7f332249f9d57e86cd9068398a1e667f15cff0b45137f9b9cc6' 
  AND token = 'wigEMb8egu2iFw9TsM++fwzqdh5xw6ON5zVLvHwjJU0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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