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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aab8c702e9862f2da2e7b573cab5a687e3bda089549cad27dbd27163bc7ceb5e' 
  AND token = 'yXByPKp1Vxu7zSGM6SivyWz0z31yfTZOTRUXLrZ8zHE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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