Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b14ad95882f62c6cc395c005052d1ebff63c27df3f31f2f21eb30f2616ece6dd' 
  AND token = '73wK1i2V5vPNd20dYC0T4JdzKVfR86LDps/gx4i0scg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00057

JSON explain

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