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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd9b8b1b7e76dc6c99b7cf60b807b19cdbdb22f6ed17ca402ef7475fbfdd9c946' 
  AND token = 'E7Yr02Dv8RaqGcRHQfWPX+Ewz+5GnIpx6HkZ2i6rXGw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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