SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3d7bfa031c7b0dfa5b27a3b99f1cd0944fa0b47ac83ab0738038ccd1a279637f' 
  AND token = 'jDYsUbLRPApMvznmUfkPZK6KvukQ+NQJMISJSqy1t9w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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