SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9066b71384b59be04030f4e12bf8228d085f7e148e9ecc21797148676f8ba95d' 
  AND token = 'Rp0VpKqJPKGpG8EI9pwhaTS/7X6jRI2Bbd+1Uxm8LCs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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