Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9f1fb58cffc255c25f727d0c348ed4d4419041678ecc0f48feeffcad5dbdca32' 
  AND token = 'QgrenIdz3jvl4iU0TawUrb97hH1bh6IT7IPPx5uCPPg=' 
  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"
    }
  }
}