SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9ca4a8d497ffdb822dc6c0b43d1fc2e4a8ac8219a9fba4e55d2fb96747021f65' 
  AND token = 'qTKs2/s+V+cArqwhB32h3GAVs7gxjhvVlnhBOqSpuXE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}