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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01d3fde8dc379610f5645f648270fde7c81cfbac35bdd61afb8444dcf7224708' 
  AND token = 'y0A8PVjoiV5L7OBfix7BCNMVGGvE9qx4VG28UsV9POQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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